A particle start to travel from a point P on the curve C1: |z – 3 – 4i| = 5, where |z| is maximum. From P, the particle moves through an angle tan-1 3/4 in anticlockwise direction on |z – 3 – 4i| = 5 and reaches at point Q. From Q, it comes down parallel to imaginary axis by 2 units and reaches at point R. Find the complex number corresponding to point R in the Argand plane.